<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="7">
          <el-input placeholder="请输入搜索内容"
                    v-model="queryInfo.query">
            <el-button slot="append"
                       icon="el-icon-search"
                       @click="getUserList">
            </el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary"
                     @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <el-table :data="userlist"
                border
                stripe>
        <el-table-column type="index"
                         label="#">
        </el-table-column>
        <el-table-column prop="username"
                         label="姓名"
                         width="180">
        </el-table-column>
        <el-table-column prop="email"
                         label="邮箱"
                         width="180">
        </el-table-column>
        <el-table-column prop="mobile"
                         label="电话">
        </el-table-column>
        <el-table-column prop="role_name"
                         label="角色">
        </el-table-column>
        <el-table-column prop="mg_state"
                         label="状态">
          <template slot-scope="scope">
            <!-- {{scope.row}} slot-scope为插槽 -->
            <el-switch v-model="scope.row.mg_state"
                       @click="userStateChanged(scope.row)">
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作"
                         width="200px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button type="primary"
                       size="mini"
                       icon="el-icon-edit"
                       @click="showEditDialog(scope.row.id)">
            </el-button>
            <!-- 删除按钮 -->
            <el-button type="danger"
                       size="mini"
                       icon="el-icon-delete"
                       @click="removeUserById(scope.row.id)">
            </el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip effect="dark"
                        content="分配角色 "
                        placement="top"
                        :enterable="false">
              <el-button type="warning"
                         size="mini"
                         icon="el-icon-star-off"
                         @click="setRole(scope.row)">
              </el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination @size-change="handleSizeChange"
                     @current-change="handleCurrentChange"
                     :current-page="queryInfo.pagenum"
                     :page-sizes="[1, 2, 5, 10]"
                     :page-size="queryInfo.pagesize"
                     layout="total, sizes, prev, pager, next, jumper"
                     :total="total">
      </el-pagination>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户"
               :visible.sync="addDialogVisible"
               width="50%"
               @close="addDialogClosed">
      <!-- 内容主体区域 -->
      <el-form :model="addForm"
               :rules="addFormRules"
               ref="addFormRef"
               label-width="70px">
        <el-form-item label="用户名"
                      prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码"
                      prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱"
                      prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机"
                      prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary"
                   @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户的对话框 -->
    <el-dialog title="修改用户信息"
               :visible.sync="editDialogVisible"
               width="50%"
               @close="editDialogClosed">
      <!-- 内容主体区域 -->
      <el-form :model="editForm"
               :rules="editFormRules"
               ref="editFormRef"
               label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username"
                    disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱"
                      prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机"
                      prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="editDialogVisible= false">取 消</el-button>
        <el-button type="primary"
                   @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog title="提示"
               :visible.sync="setRoleDialogVisible"
               width="50%"
               @close="setRoleDialogClosed">
      <p>用户名称：{{userInfo.username}}</p>
      <p>用户当前角色：{{userInfo.role_name}}</p>
      <p>分配新角色：
        <el-select v-model="selectedRoleId"
                   placeholder="请选择">
          <el-option v-for="item in roleList"
                     :key="item.id"
                     :label="item.roleName"
                     :value="item.id">
          </el-option>
        </el-select>
      </p>
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary"
                   @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    // 验证邮箱的规则
    var checkEmail = (rule, value, ck) => {
      // 验证邮箱的正则表达式
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/

      if (regEmail.test(value)) {
        // 合法的邮箱
        return ck()
      }

      ck(new Error('请输入合法的邮箱'))
    }
    // 验证手机号的规则
    var checkMobile = (rule, value, ck) => {
      // 验证邮箱的正则表达式
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/

      if (regMobile.test(value)) {
        // 合法的手机号
        return ck()
      }

      ck(new Error('请输入合法的手机号'))
    }
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前的页数
        pagenum: 1,
        // 当前每页显示多少条数据  
        pagesize: 5
      },
      userlist: [],
      total: 0,
      // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', triggger: 'blur' },
          { min: 3, max: 10, message: '用户名的长度在3 ~ 10个字符之间', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', iggger: 'blur' },
          { min: 3, max: 10, message: '密码的长度在6 ~ 15个字符之间', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', triggger: 'blur' },
          { validator: checkEmail, triggger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', triggger: 'blur' },
          { validator: checkMobile, triggger: 'blur' }
        ],
      },
      // 控制编辑用户信息对话框的显示与隐藏
      editDialogVisible: false,
      // 查询到的用户信息对象
      editForm: {},
      // 修改表单的验证规则对象
      editFormRules: {
        email: [
          { required: true, message: '请输入用户邮箱', triggger: 'blur' },
          { validator: checkEmail, triggger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入用户手机', triggger: 'blur' },
          { validator: checkMobile, triggger: 'blur' }
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要分配角色的用户信息
      userInfo: {},
      // 存放所有角色的数据
      roleList: [],
      // 已经选中的角色Id值
      selectedRoleId: ''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get('users', { params: this.queryInfo })
      console.log(res)
      if (res.meta.status !== 200) return this.$message.error('获取用户列表失败！')

      this.userlist = res.data.users
      this.total = res.data.total
    },
    // 监听 pageSize 的改变事件
    handleSizeChange(newSize) {
      // console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听 页码值 改变的事件
    handleCurrentChange(newPage) {
      // console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听 Switch 开关状态的改变
    userStateChanged(userinfo) {
      console.log(userinfo)
    },
    // 监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮，添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        // console.log(valid)
        if (!valid) return
        // 可以发起添加用户的网络请求
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status != 201) {
          this.$message.error('添加用户失败！')
        }
        this.$message.success('添加用户成功！')
        // 隐藏添加用户的对话框
        this.addDialogVisible = false
        // 重新获取用户列表的数据
        this.getUserList()
      })
    },
    // 展示编辑用户的对话框
    async showEditDialog(id) {
      this.editDialogVisible = true
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status != 200) {
        return this.$message.error('查询用户信息失败！')
      }
      this.$message.success('查询用户信息成功！')
      this.editForm = res.data
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    // 点击按钮，提交修改好的用户的信息
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        // 发起修改用户信息的网络请求
        const { data: res } = await this.$http.put('users/' + this.editForm.id, { email: this.editForm.email, mobile: this.editForm.mobile })
        if (res.meta.status != 200) {
          return this.$message.error('更新用户信息失败！')
        }
        this.$message.success('更新用户信息成功！')
        // 关闭对话框
        this.editDialogVisible = false
        // 刷新数据
        this.getUserList()
      })
    },
    // 根据id，删除对应用户的信息
    async removeUserById(id) {
      // 弹框询问是否删除数据
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 如果用户确认删除，则返回字符串 confirm
      // 如果用户取消删除，则返回字符串 cancel
      console.log(confirmResult)
      if (confirmResult != 'confirm') {
        return this.$message.info('已取消删除')
      }

      // 发起删除用户信息的网络请求
      const { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status != 200) {
        return this.$message.error('删除用户信息失败！')
      }
      this.$message.success('删除用户信息成功！')
      // 刷新表单数据
      this.getUserList()
    },
    //  展示分配角色对话框
    async setRole(userInfo) {
      this.userInfo = userInfo

      // 获取所有角色数据
      const { data: res } = await this.$http.get('roles')
      this.roleList = res.data
      this.setRoleDialogVisible = true
    },
    // 给用户分配新的角色
    async saveRoleInfo() {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色！')
      }
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectedRoleId })
      if (res.meta.status != 200) {
        return this.$message.error('更新角色失败！')
      }
      this.$message.success('更新角色成功！')
      // 刷新数据
      this.getUserList()
      // 关闭对话框
      this.setRoleDialogVisible = false
    },
    //关闭分配角色对话框触发的事件 
    setRoleDialogClosed() {
      this.selectedRoleId = ''
      this.userInfo = []
    }
  },
}
</script>

<style lang="less" scoped>
</style>